Method of preparing insoles.



J. OAVANAGH, JR.

METHOD OF PREPARING INSOLES'. APPLICATION FILED JUNE 15, 1914.

1, 1 1 3,542. Patented Oct. 13, 1914.

UNITED STATES PATENT OFFICE.

JAMES CAVANAGH, J R., 0F BOSTON, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Oct. 13, 1914.

Original application filed March 28, 1907, Serial No. 365,142. Dividedand this application filed June 15,

. 1914. Serial No. 845,187.

To all whom it may concern Be it known that I, JAMES CAVANAGH, J r., acitizen of the United States, residing at Boston, in the county ofSuffolk and Commonwealth of Massachusetts, have invented certainImprovements in Methods of Preparing Insoles, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like reference characters on the drawings indicating likeparts in the several figures.

In preparing an insole for the operation of an inseam shoe sewingmachine, a stitchreceiving rib is formed on one surface of the sole nearthe margin from a point on one side of the sole near the heel end to anopposite point on the opposite side of the sole. This rib is formed bythe action of knives which either split the edge of the sole to" form alip which is subsequently turned up at substantially right angles to thesurface of the sole, or which split the edge of the sole and form achannel and channel flap, or which form a channel or channel iiap andcut away a portion of theedge of a sole to form a shoulder.

On account of the difiiculty and practical impossibility of entering andremoving the knives at the points where the stitch-receiving rib shouldbegin and end, the knives are entered into and removed from the sole atpoints on the edge of the heel portion of the sole and as a result theheel portion of the sole is weakened so that it is liable to become moreor less distorted during the subsequent operations of lasting andheeling the shoe. Also when the edge of the insole is split and aportion thereof turned up to form a lip, it is necessary to cut the lipat the point where the inseam is to begin and end in order to permit theportion of the lip at the heel end of the sole to be pressed down flat,this cutting operation being performed either before or during thelasting operation.

The object of the present invention is to produce an insole in which thestitch-receiving rib begins and ends at the desired points and in whichthe heel portion of the sole is not cut or injured.

With this object in view, the present invention contemplates cuttingtransverse slits in the insole at the points where it'is desired to havethe stitch-receiving rib begin and end, and in utilizing these slits toenter and remove the rib-forming knife or knives so that the rib formedby the knives begins at one sllt and ends at the other, and the heelportion of the sole is not cut or inured by the knife or knives. Theslits may extend into the sole at right angles to the surface thereof,but preferably extend 0bliquely toward the toe end of the sole asthereby no abrupt angle is formed at the unction of the heel and shankportions of the sole, and a better surface is provided to receive thecrimped-in edge of the counter when the shoe is lasted.

The present invention will be clearly understood from an inspection ofthe accompanying drawing, in which- Figure 1 is a plan view of an insoleprovided with transverse slits to mark the beginning and end of thestitch-receiving lip; Fig; 2 is a view in side elevation of the insoleillustrated in Fig. 1, showing the preferred oblique arrangement ofthe'slits; and Fig. 3 is a plan view of the sole after the sole has beenacted upon by the edge splitting and channeling knives of a channelingmachine, and after a portion of the edge of the sole has been turned upto form a lip.

As illustrated in the drawing, the insole 1 is first provided with twoslits 2 and 3 which extend transversely of the sole from each edgetoward the medial line and which are located at the points at which thestitchreceiving lip is to begin and end. These slits may be made bymeans of a hand knife or by any suitable machine adapted to the purpose.The slits preferably extend 0bliquely to the surface of the sole towardthe toe end as indicated in Fig. 2.

The insole provided with slits, as indicated in Figs. 1 and 2,constitutes a complete article which is produced before the sole issubjected to the action of the knife or knives of a machine for formingthe stitch-receiving rib. The stitch-receiving rib may be formed bysubjecting the insole to the action of any suitable insole channeling,edge-splitting, or edge-shouldering machine. When the insole ispresented to such a machine the slits 2 and 3 provide respectively anentrance and an exit for the rib-forming knife or knives so that thestitch-receiving rib begins at the slit 2 and ends at the slit 3.

In Fig. 3 a channel flap is indicated at 4:,

and an upturned lip is indicated at 5, the channel flap having beenformed by the channeling knife of a channeling and edge splittingmachine, and the lip havin been formed by the splitting knife of sucmachine and subsequently turned up at substantially right angles to thesurface of the sole. In this sole it will be seen that the heel portionof the sole is not cut or injured but is in its original flat condition,and that when the shoe is lasted no cutting operation need be erformedupon the upturned lip 5.

' It will a so be seen that the stitch-receiving rib begins and ends atprecisely the desired points so that the counter can be readily lastedover the heel seat and secured in the proper position. By providing theinsole with slits before the stitch-receiving rib is formed the pointsat which the rib begins and ends are determined with accuracy, anduniform results upon a large number of soles can be secured.

he improved insole illustrated in the drawings and above described isnot claimed herein, but forms the subject matter of a separateapplication filed March 28, 1907, Ser. No. 365,142, of which thisapplication is a division.

The nature and scope of the present invention having been indicated, andthe manner in which the invention is to be practised having beenspecifically described, what is claimed is 1. The method of preparinginsoles which consists in cutting transverse slits extending part wayonly through the thickness of the sole at the points where it is desiredto have the stitch receiving rib begin and end, and in thereafter maklnga cut around the sole beginning at one of said slits and. ending at theother to form a stitch receiving rib.

2. The method of preparing insoles which consists in cutting transverseslits in the sole extending obliquely toward the toe end of the sole atthe points where it is desired to have the stitch receiving rib beginand end, and part way only through the thickness of the sole, and inthereafter making a cut around the sole beginning at one of said slitsand ending at the other to form a stitch receiving rib.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribin witnesses.

JA ES OAVANAGI-I, JR.

Witnesses:

ELIZABETH C. Oourn, WILLIAM B. Kmo.

